Recognised as Colour
#FF9915
- #FF9915
- Orange
- Dark
- Nearest: Dark orange
#FF9915 is a orange with RGB values 255, 153, 21 and HSL 34°, 100%, 54%. It is a dark colour, so black text on it reaches 9.8:1 contrast (AAA for normal text). The nearest named colour is Dark orange.
Colour values
#FF9915#FF9915
HEX#FF9915
RGBrgb(255, 153, 21)
RGB (0–1)1, 0.6, 0.0824
RGB percentages100%, 60%, 8.2%
HSLhsl(33.8, 100%, 54.1%)
HSV / HSBhsv(33.8, 91.8%, 100%)
CMYK0%, 40%, 91.8%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer16,750,869
CSS custom property--colour: #FF9915;
Brightness & contrast
Relative luminance0.44097WCAG 2.x, 0 is black and 1 is white
Perceived brightness182.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.82:1
Contrast with white2.14:1WCAG normal text: Fail
Contrast with black9.82:1WCAG normal text: AAA
Greyscale equivalent#A5A5A5
Inverted#0066EA
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.14:1WCAG large text: Fail
Contrast with black, large text9.82:1WCAG large text: AAA
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#157BFF
Analogous#FF2415, #F0FF15
Triadic#15FF99, #9915FF
Split complementary#15F0FF, #2415FF
Tetradic#15FF24, #157BFF, #FF15F0
Tints, shades & saturation
Channel breakdown
R255
G153
B21
Red255 (100%)
Green153 (60%)
Blue21 (8.2%)
Hue33.85°
Saturation (HSL)100%
Lightness54.12%
Dominant channelRed
Hex per channelR FF · G 99 · B 15
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Also reads as
FF9915 (chemical formula)
- Formula
- 188,384.168 g/mol
- 9916 atoms
FF9915 has a molar mass of 188,384.168 g/mol, made up of 9916 atoms across 1 element: 9916 × F.
Molar mass
Molar mass188,384.168 g/mol
Total atoms per molecule9916
Distinct elements1
Mass of one molecule3.1281927 × 10^-19 g
Molecules per gram3.196734 × 10^18
Name
NameNot in the name tablea name cannot be worked out from a formula alone: isomers share formulas, and naming depends on bonding the formula does not show
Composition by mass
F100%
Fluorine (F × 9916)188,384.168 g/mol, 100%
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